A galvanometer
A galvanometer, whose resistance is 50ohm, has 25 division in it. When a current of 4×10^−4 A passes through it, is its needle (pointer) deflects by one division. To use this galvanometer as a voltmeter of range 2.5V, it should be connected to a resistance of:
05
Dec
A galvanometer, whose resistance is 50ohm, has 25 division in it. When a current of 4×10^−4 A passes through it, is its needle (pointer) deflects by one division. To use this galvanometer as a voltmeter of range 2.5V, it should be connected to a resistance of: A galvanometer has 25 division in it. When a [...]
A galvanometer, together with an unknown resistance in series, is connected across two identical batteries of each 1.5 V. When the batteries are connected in series, the galvanometer records a current of 1 A, and when the batteries are connected in parallel, the current is 0.6 A , then the internal resistance is 1/x ′ Ω. What is the value of x’?
15
Nov
A galvanometer, together with an unknown resistance in series, is connected across two identical batteries of each 1.5 V. When the batteries are connected in series, the galvanometer records a current of 1 A, and when the batteries are connected in parallel, the current is 0.6 A , then the internal resistance is 1/x ′ [...]
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A galvanometer ,
and when the batteries are connected in parallel ,
is connected across two identical batteries of each 1.5 V. When the batteries are connected in series ,
the current is 0.6 A ,
the galvanometer records a current of 1 A ,
then the internal resistance is 1/x ′ Ω. What is the value of x'? ,
together with an unknown resistance in series ,