Physics Quiz

What is the purpose of Millikan's oil drop experiment?

• To measure the charge of the electron

• To measure the mass of the electron

• To measure the speed of light

• To measure the gravitational constant

What happens to a stationary charge when subjected to a magnetic field?

• It moves in the direction of the field

• It moves against the direction of the field

• No change occurs

• It moves out of the field

What is the equivalent resistance of two resistors 3 Ω and 6 Ω in parallel?

• 2 Ω

• 3 Ω

• 4 Ω

• 12 Ω

What is the electric field strength at a point due to a charge of 2 × 10^-4 C?

• 40 N/C

• 250 N/C

• 40 N.C

• 250 N.C

What is the effect of a magnetic field on a current-carrying conductor?

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What is the power consumed by a heater with a resistance of 10.0 Ω at a voltage of 120 V?

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What is the power consumed by the heater with a resistance of 10.0 Ω and a voltage of 120 V?

• 1.44 KW

• 130 KW

• 0.08 KW

• 180 KW

True or False: Coherent light is light with an irregular wavefront.

• True

• False

True or False: The Doppler effect is used to distinguish between the presence of two stars instead of one star in the sky.

• True

• False

True or False: The current in a conductor is directly proportional to the voltage and inversely proportional to the distance from it.

• True

• False