Chapter 3: Current Electricity Physics Mcqs for High School - Grade 10 - Set 8

1)   Voltage can be fatal of

a. 10 V
b. 20 V
c. 15 V
d. 50 V
Answer  Explanation 

ANSWER: 50 V

Explanation:
No explanation is available for this question!


2)   2 resistances of 4kΩ and 6kΩ are joined in series, if a battery of 10 V is connected across the ends then, the current passing through each of the resistance is

a. 1 mA
b. 10 mA
c. 5 mA
d. 2 mA
Answer  Explanation 

ANSWER: 1 mA

Explanation:
No explanation is available for this question!


3)   Glass, wood, plastic, silk, and fur are examples of

a. metals
b. plasma
c. liquids
d. insulators
Answer  Explanation 

ANSWER: insulators

Explanation:
No explanation is available for this question!


4)   The energy supplied by a battery to unit positive charge flowing in a closed circuit is called

a. electrical energy
b. Electromotive force (EMF)
c. mechanical energy
d. kinetic energy
Answer  Explanation 

ANSWER: Electromotive force (EMF)

Explanation:
No explanation is available for this question!


5)   The total current is equal to the sum of the currents in various resistances in

a. series combination
b. parallel combination
c. circular combination
d. random combination
Answer  Explanation 

ANSWER: parallel combination

Explanation:
No explanation is available for this question!


6)   The wire maintained at high potential is known as

a. Earth/ground wire
b. livewire
c. neutral wire
d. delta wire
Answer  Explanation 

ANSWER: livewire

Explanation:
No explanation is available for this question!


7)   The combination in which one end of each resistor is connected with the positive terminal of the battery and the other end is connected with the negative terminal is called

a. series combination
b. parallel combination
c. circular combination
d. random combination
Answer  Explanation 

ANSWER: parallel combination

Explanation:
No explanation is available for this question!


8)   The rate of flow of electric charge through any cross-sectional area is called

a. energy
b. light
c. heat
d. current
Answer  Explanation 

ANSWER: current

Explanation:
No explanation is available for this question!


9)   In a circuit 3 resistors 2&Omega, 3&Omega, 6Ω are connected (in parallel combination) across a battery of 6V, then the total current of the circuit should be

a. 12A
b. 3A
c. 6A
d. 2A
Answer  Explanation 

ANSWER: 6A

Explanation:
No explanation is available for this question!


10)   Current can be fatal of

a. 50 mA
b. 30 mA
c. 5 mA
d. 10 mA
Answer  Explanation 

ANSWER: 50 mA

Explanation:
No explanation is available for this question!


11)   In a light bulb of 60 W, the current in a bulb fluctuates in each second

a. 50 times
b. 100 times
c. 25 times
d. 70 times
Answer  Explanation 

ANSWER: 50 times

Explanation:
No explanation is available for this question!


12)   The induced charge on insulators

a. resides on surface
b. move inside
c. change into electric current
d. moves outwards
Answer  Explanation 

ANSWER: resides on surface

Explanation:
No explanation is available for this question!


13)   As the temperature rises, the resistance of the thermistor

a. decreases
b. increases
c. remains same
d. none of above
Answer  Explanation 

ANSWER: decreases

Explanation:
No explanation is available for this question!


14)   We can use the formula[ (watt × time of use in hours)/1000 × the cost of one unit] to find the amount of

a. income tax
b. electricity bill
c. sales tax
d. none of above
Answer  Explanation 

ANSWER: electricity bill

Explanation:
No explanation is available for this question!


15)   2 resistances of 4kΩ and 6kΩ are joined in series, if a battery of 10 V is connected across the ends, then equivalent resistance of the series combination should be

a. 15kΩ
b. 10kΩ
c. 2kΩ
d. 24kΩ
Answer  Explanation 

ANSWER: 10kΩ

Explanation:
No explanation is available for this question!


16)   The electric power enters our houses through

a. 2 wires
b. 1 wire
c. 4 wires
d. 3 wires
Answer  Explanation 

ANSWER: 3 wires

Explanation:
No explanation is available for this question!


17)   A 60 W light bulb converts electrical energy into light and heat energy in each second of

a. 30 J
b. 60 J
c. 120 J
d. 20 J
Answer  Explanation 

ANSWER: 60 J

Explanation:
No explanation is available for this question!


18)   If we double both current and voltage keeping the resistance constant then power is

a. unchanged
b. halves
c. doubles
d. quadruples
Answer  Explanation 

ANSWER: quadruples

Explanation:
No explanation is available for this question!


19)   The current which does not change its direction of flow is called

a. negative current
b. direct current
c. alternative current
d. fixed current
Answer  Explanation 

ANSWER: direct current

Explanation:
No explanation is available for this question!


20)   On applying an external magnetic field, free electrons move

a. randomly
b. in a specific direction
c. circular
d. against magnetic field
Answer  Explanation 

ANSWER: in a specific direction

Explanation:
No explanation is available for this question!