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Chapter 1 - Electric Current, Ohms Law and Kirchhoffs Laws

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Chapter 2 - Magnetic Effects of Electric Current and Measuring Instruments

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Chapter 3 - Electromagnetic Induction and AC Dynamo and Transformer

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Chapter 4 - Alternating Current AC Circuits

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Chapter 5 - Dual Nature of Wave and Particle

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Chapter 6 - Atomic Spectra and X-Rays

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Chapter 7 - Lasers and Principles

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Chapter 8 - Modern Electronics and Semiconductors

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Quiz

Lesson 1 Quiz: Electric Current, Potential Difference, Resistance and Resistivity

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  • Questions count: 20
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1.
STEM AC Transformer Problem 37: An ideal step-down transformer connected to a 220 V mains supply delivers power to a 12 V, 24 W lamp. What is the current flowing in the primary coil?
2.0 A
0.109 A
0.545 A
1.5 A
2.
STEM AC Transformer Problem 23: An ideal step-down transformer connected to a 220 V mains supply delivers power to a 12 V, 24 W lamp. What is the current flowing in the primary coil?
0.545 A
0.109 A
2.0 A
1.5 A
3.
STEM AC Transformer Problem 18: An ideal step-down transformer connected to a 220 V mains supply delivers power to a 12 V, 24 W lamp. What is the current flowing in the primary coil?
0.109 A
1.5 A
2.0 A
0.545 A
4.
STEM Compton Effect Problem 18: In the Compton scattering effect, when a high-energy X-ray photon collides with a free stationary electron, which change occurs to the scattered photon?
Its frequency increases and energy increases
Its mass increases while kinetic energy decreases
Its frequency decreases, its wavelength increases, and its speed remains strictly c (speed of light)
Its speed decreases significantly while wavelength remains constant
5.
STEM Compton Effect Problem 34: In the Compton scattering effect, when a high-energy X-ray photon collides with a free stationary electron, which change occurs to the scattered photon?
Its frequency decreases, its wavelength increases, and its speed remains strictly c (speed of light)
Its frequency increases and energy increases
Its mass increases while kinetic energy decreases
Its speed decreases significantly while wavelength remains constant
6.
STEM AC Transformer Problem 25: An ideal step-down transformer connected to a 220 V mains supply delivers power to a 12 V, 24 W lamp. What is the current flowing in the primary coil?
2.0 A
0.545 A
1.5 A
0.109 A
7.
STEM Compton Effect Problem 7: In the Compton scattering effect, when a high-energy X-ray photon collides with a free stationary electron, which change occurs to the scattered photon?
Its speed decreases significantly while wavelength remains constant
Its frequency decreases, its wavelength increases, and its speed remains strictly c (speed of light)
Its mass increases while kinetic energy decreases
Its frequency increases and energy increases
8.
In a pure capacitor circuit connected to an AC source, the average power consumed over a full cycle is:
A) \(V_{text{eff}} times I_{text{eff}}\)
C) Zero
B) \(I_{text{eff}}^2 times X_C\)
D) \(0.5 times V_{max} times I_{max}\)
9.
STEM Compton Effect Problem 41: In the Compton scattering effect, when a high-energy X-ray photon collides with a free stationary electron, which change occurs to the scattered photon?
Its speed decreases significantly while wavelength remains constant
Its mass increases while kinetic energy decreases
Its frequency decreases, its wavelength increases, and its speed remains strictly c (speed of light)
Its frequency increases and energy increases
10.
STEM Compton Effect Problem 1: In the Compton scattering effect, when a high-energy X-ray photon collides with a free stationary electron, which change occurs to the scattered photon?
Its speed decreases significantly while wavelength remains constant
Its frequency decreases, its wavelength increases, and its speed remains strictly c (speed of light)
Its mass increases while kinetic energy decreases
Its frequency increases and energy increases
11.
STEM AC Transformer Problem 15: An ideal step-down transformer connected to a 220 V mains supply delivers power to a 12 V, 24 W lamp. What is the current flowing in the primary coil?
1.5 A
0.545 A
0.109 A
2.0 A
12.
STEM AC Transformer Problem 5: An ideal step-down transformer connected to a 220 V mains supply delivers power to a 12 V, 24 W lamp. What is the current flowing in the primary coil?
0.109 A
1.5 A
2.0 A
0.545 A
13.
STEM Compton Effect Problem 37: In the Compton scattering effect, when a high-energy X-ray photon collides with a free stationary electron, which change occurs to the scattered photon?
Its speed decreases significantly while wavelength remains constant
Its frequency increases and energy increases
Its mass increases while kinetic energy decreases
Its frequency decreases, its wavelength increases, and its speed remains strictly c (speed of light)
14.
STEM Compton Effect Problem 6: In the Compton scattering effect, when a high-energy X-ray photon collides with a free stationary electron, which change occurs to the scattered photon?
Its speed decreases significantly while wavelength remains constant
Its frequency decreases, its wavelength increases, and its speed remains strictly c (speed of light)
Its mass increases while kinetic energy decreases
Its frequency increases and energy increases
15.
STEM AC Transformer Problem 36: An ideal step-down transformer connected to a 220 V mains supply delivers power to a 12 V, 24 W lamp. What is the current flowing in the primary coil?
1.5 A
0.545 A
2.0 A
0.109 A
16.
STEM AC Transformer Problem 1: An ideal step-down transformer connected to a 220 V mains supply delivers power to a 12 V, 24 W lamp. What is the current flowing in the primary coil?
1.5 A
0.545 A
2.0 A
0.109 A
17.
STEM AC Transformer Problem 24: An ideal step-down transformer connected to a 220 V mains supply delivers power to a 12 V, 24 W lamp. What is the current flowing in the primary coil?
2.0 A
0.545 A
1.5 A
0.109 A
18.
Light of frequency \(3 \times 10^{14}\) Hz shines on a metal whose threshold frequency is \(4.5 \times 10^{14}\) Hz. If the intensity is increased 100 times, the photoelectric current will be:
B) 10 times initial current
A) 100 times initial current
D) Infinite
C) Zero
19.
STEM Compton Effect Problem 10: In the Compton scattering effect, when a high-energy X-ray photon collides with a free stationary electron, which change occurs to the scattered photon?
Its frequency decreases, its wavelength increases, and its speed remains strictly c (speed of light)
Its speed decreases significantly while wavelength remains constant
Its frequency increases and energy increases
Its mass increases while kinetic energy decreases
20.
STEM Compton Effect Problem 25: In the Compton scattering effect, when a high-energy X-ray photon collides with a free stationary electron, which change occurs to the scattered photon?
Its speed decreases significantly while wavelength remains constant
Its frequency decreases, its wavelength increases, and its speed remains strictly c (speed of light)
Its mass increases while kinetic energy decreases
Its frequency increases and energy increases
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