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Physics 10 Chapter 14 - Current and Electricity - 7
1.
Which current is produced due to the flow of positive charges?
a) Conventional current
b) Electronic current
c) Direct current
d) Alternating current
2.
Which of the following are current measuring instruments?
a) (b) Ammeter
b) (a) Both b and c
c) (d) Voltmeter
d) (c) Galvanometer
3.
What is detected by galvanometer?
a) Current
b) Resistance
c) Voltage
d) Power
4.
What is detected by ammeter?
a) Power
b) Resistance
c) Current
d) Voltage
5.
Which device is used to detect very small current in a circuit?
a) Ohmmeter
b) Voltmeter
c) Ammeter
d) Galvanometer
6.
Current of how many amperes is sufficient to cause full scale deflection in galvanometer?
a) Pico amperes
b) Mega amperes
c) Kilo amperes
d) Milli amperes
7.
The terminal of the galvanometer with which colour shows the positive polarity?
a) Black colour
b) Red colour
c) Brown colour
d) Green colour
8.
What does the terminal of the galvanometer with black colour shows?
a) Voltage reading
b) Positive polarity
c) Negative polarity
d) Current reading
9.
The terminal of the galvanometer with which colour shows the negative polarity?
a) Red colour
b) Green colour
c) Black colour
d) Brown colour
10.
What does the terminal of the galvanometer with red colour shows?
a) Positive polarity
b) Negative polarity
c) Current reading
d) Voltage reading
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