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Physics 10 Chapter 14 - Current and Electricity - 23
1.
What is the sum of the individual resistances of the parallel combinations called?
a) Valence resistance
b) Equivalent resistance
c) Varied resistance
d) Transuded resistance
2.
If resistances R1, R2, R3 ................................Rn are connected in parallel, then what will be the formula for equivalent resistance of the combination?
a) Re = R1 + R2 + R3 + ……..+ Rn
b) Re = R1 - R2 - R3 - ……..- Rn
c) 1 / Re = 1 / R1 + 1 / R2 + 1 / R3 + ……..+ 1 / Rn
d) 1 / Re = 1 / R1 - 1 / R2 - 1 / R3 - ……..- 1 / Rn
3.
What is the power of electric stove?
a) 1500 W
b) 1000 W
c) 800 W
d) 5000 W
4.
Which energy is produced by running of turbine generators?
a) Light energy
b) Electrical energy
c) Sound energy
d) Mechanical energy
5.
What is the power of clock radio?
a) 1000 W
b) 1500 W
c) 800 W
d) 10 W
6.
Which of the following electric appliance has the least electric power?
a) Washing machine
b) Clock radio
c) Light
d) Small fan
7.
What is the power of small fan?
a) 50 W
b) 800 W
c) 1500 W
d) 1000 W
8.
Which of the following electric appliance has the greater electric power?
a) Washing machine
b) Small fan
c) Clock radio
d) Light
9.
Which of the following electric appliance has the least power?
a) Iron
b) Electric heater
c) Electric stove
d) Hair dryer
10.
What is the power of light?
a) 100 W
b) 1000 W
c) 1500 W
d) 800 W
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