FREE NEET Physics Questions and Answers

Question 1

What size resistor should be placed across the 12V battery's terminals in order to generate 500mA of current?

Accepted Answer

24Ω

Answer

0.042Ω

Answer

42Ω

Answer

24kΩ

Answer

6Ω

Question 2

What should the resistance of the heating element be if the battery is set to 24V and the total radiated power is 60W?

Accepted Answer

9.6Ω

Answer

0.4Ω

Answer

6Ω

Answer

1440Ω

Answer

150Ω

Question 3

You are required to design a circuit that has a total resistance between  40Ω and 45Ω. What resistor configuration should you use to achieve this?

Accepted Answer

R1 and R2 in parallel, connected to R3 in series

Answer

R1, R2, and R3 in series

Answer

R1  and R3 in parallel; R2 is not necessary

Answer

R2 and R3 in parallel, connected to R1 in series

Answer

R1, R2, and R3 in parallel

Question 4

What is the peak-to-peak AC current of 100V's RMS voltage?

Accepted Answer

35.5V

Answer

1000V

Answer

10V

Answer

282V

Answer

141V

Question 5

How can a positively charged rod make a conducting sphere on an insulating surface negatively charged?

Accepted Answer

Charge by induction

Answer

Charge by conduction

Answer

Charge by convection

Answer

None of these

Question 6

The electrical forces between two interacting charges is __________ when their magnitudes are multiplied by two.

Accepted Answer

quadrupled

Answer

reduced by a factor of 4

Answer

doubled

Answer

reduced by a factor of 3

Answer

reduced by a factor of 2–√

Question 7

Two spheres that are in contact but isolated from the ground are approached by a charged rod bearing a negative charge. What kind of charge will be on the two spheres if they are then separated?

Accepted Answer

The sphere near the charged rod becomes positive and the other becomes negative

Answer

The sphere near the charged rod becomes negative and the other becomes positive

Answer

The spheres do not get any charge

Answer

None of these

Question 8

When electrostatic circumstances are present, a conductor is positioned in an electric field. Which of the following claims applies to this circumstance?

Accepted Answer

All of these

Answer

The electric field on the surface of the conductor is perpendicular to the surface

Answer

The electric field is zero inside the conductor

Answer

All valence electrons go to the surface of the conductor

Question 9

What distinguishes gravitational and electrical forces most significantly?

Accepted Answer

Gravitational forces are always attractive but electrical forces can be attractive or repulsive

Answer

Electrical forces obey the inverse square law and gravitational forces do not

Answer

Electrical forces attract and gravitational forces repel

Answer

Gravitational forces obey the inverse square law and electrical forces do not

Question 10

An electric field that is vertically upward and oriented along the +y axis interacts with a charged particle moving along the +x axis. What is the sign of the charge on this particle if the force from the field is downward for the charged particle?

Accepted Answer

It is negative

Answer

It is neutral

Answer

It is positive

Answer

None of these