Current Electricity Class 10 ICSE Physics MCQ Questions
Looking for Current Electricity Class 10 ICSE Physics Chapter 8 MCQ Questions? If yes, You are the right page. Here we have provided ICSE class 10 physics chapter 8 multiple choice questions and answers. All MCQ are important.
1) The substance which do not allow electricity to pass through them is
a) insulator
b) conductor
c) semi-conductor
d) charge
Ans-Option (a)
2) The formula of current is
a) Q = I/t b)I = t/ Q
c) I = Q/t d)t=IQ
Ans-option (c)
3) one coulomb is equals to
a) change in 6.25×10^18 proton
b) change in 6.25×10^18 electrons
c)6.25X10^18 alpha ray
d) 6.25×10^18 beta ray And-Option (b)
4) To measure potential difference volmeter is always connected in
a) parallel. b) Series
c) both (a) & (b)
d) None of these
Ans-option (a)
5) A charge of 5C flows through the copper wire for 4s connected across the cell of potential difference 30V the work done is
a)100J
b) 250J
c)200J
d) 150 J
Ans- Option (d)
potential difference
V= W/Q
W = VQ = 5×30 = 150 J.
6) Ohm’s law is obeyed only when temperature of conductor remains
a) constant b) decrease
c) increase
d) Both (b) & (c).
Ans- Option (a)
7) The resistance of conductor do not depend on
a) material of conductor b) temperature of conductor
c) humidity of conductor
d) Length of conductor
Ans- option (c).
8) The specific resistance is very high for
a) metal. b) insulator
c) semiconductor d)alloys
Ans-option (b)
9) A fuse wire do not have
a) low melting
b) low resistivity
c) high conductivity
d) low specific resistance.
Ans-option (d)
10) A substance of zero resistance at a very low temperture is
a) Superconductor
b) conductor
c) Insulates
d) resistance
Ans-option (a)
11) E.m.f of a cell is independent of
a)The shape of electrodes
b) the material of electrodes
c) The distance between the electrodes
d)Both (a) & (c)
Ans-option(d)
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17) The unit shown in meter of household is
a) Watt
b) Kilowatt
c) Kilowatt hour
d) volt
Ans-Option (c)
18) The amount of heat produced in wire is directly
a)proportional to resistance & time
b) inversely proportional to resistance & time
c) proportional to power & time.
d) inversely proportional to power & time.
Ans-option (a)
19) A current of 2A is passed through a coil of resistance 75 ohm for 2 minute. The potential difference is
a) 120V b)150V
c) 170V. d) 130 V
Ans- option (b)
potentiel difference of source V = IR = 2×75 = 150V
20) which is incorrect formula of electrical power
a) I²R
b) V/R
c) V^2 × I.
d) W/t
Ans-option (c)
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