Physics – Class 12 Mock Test 3

10%

Question 1 of 10

1. Which of these relation holds good for an Ohmic conductor?

The straight-line V-I graph pass through the origin

V-I relationship is non-unique

V-I relationship is non-linear

V-I relationship depends on the sign of V for the same absolute value of V

Question 1 of 10

Question 2 of 10

2. Find the true statement.

A Van de Graff generator produces large voltage and less current

A Van de Graff generators produces large current and less voltage

A Van de Graff generators produces large resistance and less voltage

A Van de Graff generators produces large current and large resistance

Question 2 of 10

Question 3 of 10

3. The SI unit of electrical energy is ____________

kilojoule (KJ)

joules (J)

kilowatt (KW)

watt (W)

Question 3 of 10

Question 4 of 10

4. What is the use of a Van de Graff generator?

Van de Graff generator is used to create a large amount of current

Van de Graff generator is used to create a large amount of static electricity

Van de Graff generator is used to create a small amount of resistance

Van de Graff generator is used to create a small amount of voltage

Question 4 of 10

Question 5 of 10

5. Pick out the correct statement from the following about parallel combination of resistors.

The potential difference is same across each resistor

The current across the resistors are the same

The resistance offered by all resistors are the same

The equivalent overall resistance is larger than the largest resistor

Question 5 of 10

Question 6 of 10

6. In nature, free charged particles exist in the upper strata of the environment called the stratosphere. State true or false.

True

False

Question 6 of 10

Question 7 of 10

7. Which of these is a correct definition of electronic current?

The current which remains static

Current that flows from lower potential to higher potential

Current constituted by the flow of ions

Current that flows from higher potential to lower potential

Question 7 of 10

Question 8 of 10

8. Identify the material whose resistivity lie between 10^-6 Ωm and 10⁴ Ωm.

Mica

Silicon

Copper

Silver

Question 8 of 10

Question 9 of 10

9. If the fourth band of the carbon resistor is absent, it implies there is no tolerance.

False

True

Question 9 of 10

Question 10 of 10

10. Initially the potential difference of a 8 μF capacitor is 30 V. Then it is changed to 40 V. What is the increase in energy?

28 × 10^-4 J

8 × 10^-4 J

24 × 10^-4 J

18 × 10^-4 J

Question 10 of 10