A galvanometer coil has a resistance of 12 Ω and the metre shows full-scale deflection for a current of 3 mA. How will you convert the metre into a voltmeter of range 0 to 18 V?

1. a resistor of resistance 5988 Ω is to be connected in series with the galvanometer.
2. a resistor of resistance 4988 Ω is to be connected in parallel with the galvanometer.
3. a resistor of resistance 4988 Ω is to be connected in series with the galvanometer.
4. a resistor of resistance 5988 Ω is to be connected in parallel with the galvanometer.

Subtopic:  Conversion to Ammeter & Voltmeter |
 70%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
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A galvanometer coil has a resistance of 15 Ω and the metre shows full-scale deflection for a current of 4 mA. How will you convert the metre into an ammeter of range 0 to 6 A?

1. a shunt resistor 0.02 Ω  is to be connected in series with the galvanometer.
2. a shunt resistor 0.02 Ω is to be connected in parallel with the galvanometer.
3. a shunt resistor 0.01 Ω  is to be connected in series with the galvanometer.
4. a shunt resistor 0.01 Ω is to be connected in parallel with the galvanometer.

Subtopic:  Conversion to Ammeter & Voltmeter |
 67%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
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