A voltmeter has a $25 Ω$ coil and $575 Ω$ in series. The coil takes 10mA for full scale deflection. The maximum potential difference which can be measured is

250 m V

No worries! We‘ve got your back. Try BYJU‘S free classes today!

5.75 V

No worries! We‘ve got your back. Try BYJU‘S free classes today!

5.5 V

No worries! We‘ve got your back. Try BYJU‘S free classes today!

6.0 V

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D $6.0 V$
Let, resistance of voltmeter is, $R_{v} = 25 Ω$
resistance of coil is, $R_{c} = 575 Ω$
Current is $I = 10 m A = 10 \times 10^{- 3} A$
Since, a voltmeter and a coil are connected in series, same current flow through both of them.
According to KVL.
$I R_{v} + I R_{c} - V = 0$
$V = I (R_{v} + R_{c})$
$V = 10 \times 10^{- 3} (25 + 575)$
$V = 600 \times 10^{- 2}$
$V = 6 V$

Suggest Corrections

Similar questions

A voltmeter consists of a 25 $Ω$ coil connected in series with a 575 $Ω$ . The coil takes 10mA for full scale deflection. What maximum potential difference can be measured on this voltmeter ?

A voltmeter consists of a 25 ft coil connected in series with a 575 ft resistor. The coil takes 10 mA for full scale deflection. What maximum potential difference can be measured on this voltmeter?

Q. A moving coil instrument having a resistance of

10 Ω

, gives a full-scale deflection when the current is 10 mA. What should be the value of the series resistance, so that it can be used as a voltmeter for measuring potential difference up to 100 V?

A galvanometer coil has a resistance $90 Ω$ and full scale deflection current 10mA. A $910 Ω$ resistance is connected in series with the galvanometer to make a voltmeter. If the least count of the voltmeter is $0.1 V$ , the number of divisions on its scale is

Q. A permanent magnet moving coil gives full scale deflection at 40 mV potential difference and 8 mA current. What will be the required series resistance when it is used as voltmeter of range 0 200 V?

Join BYJU'S Learning Program

A voltmeter has a 25Ω coil and 575Ω in series. The coil takes 10mA for full scale deflection. The maximum potential difference which can be measured is

A voltmeter has a $25 Ω$ coil and $575 Ω$ in series. The coil takes 10mA for full scale deflection. The maximum potential difference which can be measured is