This question involves converting a galvanometer (or ammeter) into a voltmeter. To measure voltage, a high resistance is connected in series with the meter. The total resistance of the voltmeter is designed such that the full-scale deflection current flows only when the maximum desired voltage is applied across the voltmeter. The formula used is $R_{series} = (V_{max} / I_{fsd}) - R_{internal}$.
The full-scale deflection current of a meter is 1 mA and its internal resistance is 100 $ \Omega$. This meter is to have full deflection when 100 V is measured. What is the value of series resistor to be used?
Asked in GS&EI ElectEngg 14 2024 1601 2025 · Topic: Electric Current (Ohm's Law, resistance, resistivity, and conductivity)
More Physics questions
- A transmission line having a surge impedance of $400 \Omega$ is connected with a cable which has surge impedance of $40 \Omega$. A surge magnitude of $100$ kV is travelling from the transmission line towards the cable. The transmitted voltage will be
- A transmission line having a surge impedance of $400 \Omega$ is connected with a cable which has surge impedance of $40 \Omega$. A surge magnitude of $100 \text{ kV}$ is travelling from the transmission line towards the cable. The transmitted voltage will be
- A two-winding 220 V/110 V, 1.5 kVA transformer is reconnected as a 220 V/330 V auto- transformer. It is rerated as
- The power is transmitted through a transmission line of impedance (r+jx) at equal voltage at both ends. The maximum power can be transferred under the steady-state condition if
- To test the insulator against HV surges caused by lightning, the test normally adopted is
- Which of the following specifications is not correct for a common-collector amplifier?
- In a transistor circuit shown in Fig. 7 below, the collector to ground voltage is +20 V. The possible condition is
- The circuit shown in Fig. 8 below is a