1.
In current electricity, a positive charge refers to,
(a)
presence of electron
(b)
presence of proton
(c)
absence of electron
(d)
absence of proton
[Answer: (c) absence of electron]
2.
Rubbing of comb with hair
(a)
creates electric charge
(b)
transfers electric charge
(c)
either (a) or (b)
(d)
neither (a) nor (b)
[Answer: (b) transfers electric charge]
3.
Electric field lines ――― from
positive charge and ――― in negative charge.
(a)
start; start
(b)
start; end
(c) start: end
(d)
end; end
[Answer: (b) or (c) start, end]
4.
Potential near a charge is the measure of its ――― to bring
a positive charge at that point.
(a)
force
(b)
ability
(c)
tendency
(d)
work
[Answer: (d) work]
5.
Heating effect of current is called,
(a)
Joule heating
(b)
Coulomb heating
(c)
Voltage heating
(d)
Ampere heating
[Answer: (a) Joule heating]
6.
In an electrolyte the current is due to the flow of
(a)
electrons
(b)
positive ions
(c)
both (a) and (b)
(d)
neither (a) nor (b)
[Answer: (c) both (a) and (b)]
7.
Electroplating is an example for
(a)
heating effect
(b)
chemical effect
(c)
flowing effect
(d)
magnetic effect
[Answer: (b) chemical effect]
8.
Resistance of a wire depends on,
(a)
temperature
(b)
geometry
(c)
nature of material
(d)
all the above
[Answer: (d) all the above]
1.
Electric Charge - (a) ohm
2.
Potential difference - (b) ampere
3.
Electric field - (c) coulomb
4.
Resistance - (d) newton per coulomb
5.
Electric current - (e) volt
Answer: 1-c, 2-e, 3-d, 4 -a, 5-b
1.
Electric Charge - coulomb
2.
Potential difference - volt
3.
Electric field - newton per coulomb
4.
Resistance - ohm
5.
Electric current - ampere
1. Electrically
neutral means it is either zero or equal positive and negative charges.
Answer: True.
2. Ammeter
is connected in parallel in any electric circuit.
Answer: False.
Correct statement: Ammeter is connected in series in any electric circuit.
3. The
anode in electrolyte is negative.
Answer: False.
Correct statement: The anode in electrolyte is positive.
4.
Current
can produce magnetic field.
Answer: True.
1. Electrons
move from lower potential to higher
potential.
2.
The
direction opposite to the movement of electron is called conventional current.
3. The
e.m.f of a cell is analogues to water pump
of a pipe line.
4.
The
domestic electricity in India is an ac with a frequency of 50 Hz.
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