Chapter 3: Current Electricity Physics Mcqs for High School - Grade 10 - Set 4

1)   The unidirectional current is called

a. alternating current
b. electric charge
c. direct current
d. indirect current
Answer  Explanation 

ANSWER: direct current

Explanation:
No explanation is available for this question!


2)   As compare to thin wires, thick wires have

a. more resistance
b. no resistance
c. less resistance
d. same resistance
Answer  Explanation 

ANSWER: less resistance

Explanation:
No explanation is available for this question!


3)   A 50 W television and 3 kW oven are connected to a 300 V supply. The resistance of each appliance is respectively

a. 200Ω, 20Ω
b. 1875Ω, 6Ω
c. 308Ω, 589Ω
d. 350Ω, 208Ω
Answer  Explanation 

ANSWER: 1875Ω, 6Ω

Explanation:
No explanation is available for this question!


4)   To pass no current through it, an ideal voltmeter should have

a. very large resistance
b. very small resistance
c. no resistance
d. none of above
Answer  Explanation 

ANSWER: very large resistance

Explanation:
No explanation is available for this question!


5)   Current due to the flow of positive charges is called

a. electronic current
b. conventional current
c. protonic current
d. all of above
Answer  Explanation 

ANSWER: conventional current

Explanation:
No explanation is available for this question!


6)   Resistors are connected end to end in

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

ANSWER: series combination

Explanation:
No explanation is available for this question!


7)   To pass the maximum current in the circuit, an ideal galvanometer should have

a. large resistance
b. very small resistance
c. no resistance
d. none of above
Answer  Explanation 

ANSWER: very small resistance

Explanation:
No explanation is available for this question!


8)   In metals, the current is produced due to the flow of

a. positive charges
b. negative charges
c. no charges
d. partially charges
Answer  Explanation 

ANSWER: negative charges

Explanation:
No explanation is available for this question!


9)   The time interval after which the alternative current voltage or current repeats its value is called its

a. frequency
b. time period
c. amplitude
d. wavelength
Answer  Explanation 

ANSWER: time period

Explanation:
No explanation is available for this question!


10)   The agency which provides the potential difference for the steady flow of current in the copper wire is the

a. battery
b. voltmeter
c. galvanometer
d. ammeter
Answer  Explanation 

ANSWER: battery

Explanation:
No explanation is available for this question!


11)   Materials having a resistance that changes with voltage or current are called

a. ohmic
b. non-ohmic
c. batteries
d. capacitors
Answer  Explanation 

ANSWER: non-ohmic

Explanation:
No explanation is available for this question!


12)   A resistor having resistance 6.2Ω is connected across a battery of 5 V using a wire of negotiable resistance. Current passes through the resistor are 0.4 A. The power dissipated in the resistor is

a. 0.72 W
b. 1.5 W
c. 0.99 W
d. 3 W
Answer  Explanation 

ANSWER: 0.99 W

Explanation:
No explanation is available for this question!


13)   A thermistor is used in a circuit that senses

a. current changes
b. voltage changes
c. area changes
d. temperature changes
Answer  Explanation 

ANSWER: temperature changes

Explanation:
No explanation is available for this question!


14)   Electric potential and Electromotive force (EMF) are

a. different terms
b. have different units
c. same terms
d. undefined terms
Answer  Explanation 

ANSWER: same terms

Explanation:
No explanation is available for this question!


15)   The property of a substance which offers opposition to flow of current is called

a. friction
b. friction
c. current
d. Electromotive force (Electromotive force (EMF))
Answer  Explanation 

ANSWER: friction

Explanation:
No explanation is available for this question!


16)   The neutral wire carries

a. zero potential
b. maximum potential
c. unit potential
d. minimum potential
Answer  Explanation 

ANSWER: zero potential

Explanation:
No explanation is available for this question!


17)   An ideal voltmeter should have

a. low resistance
b. high resistance
c. zero resistance
d. minimal resistance
Answer  Explanation 

ANSWER: high resistance

Explanation:
No explanation is available for this question!


18)   The appliances should not operate after the fuse has blown, so the fuses are connected with

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

ANSWER: livewire

Explanation:
No explanation is available for this question!


19)   Human body is

a. insulator
b. low resistive
c. conductor
d. electrolyte
Answer  Explanation 

ANSWER: conductor

Explanation:
No explanation is available for this question!


20)   In series combination, the current passing through each resistor is

a. non determined
b. zero
c. same
d. different
Answer  Explanation 

ANSWER: same

Explanation:
No explanation is available for this question!