Current Electricity

Related Questions

• The resistance of hot tungsten filament is about 10 times the cold resistance. What will be the resistance of 100 W and 200 V lamp when not in use

  ---

• Calculate the amount of charge flowing in 2 minutes in a wire of resistance $10 \Omega$ when a potential difference of 20 V is applied between its ends

  ---

• An ammeter whose resistance is $180\,\Omega $ gives full scale deflection when current is 2 mA. The shunt required to convert it into an ammeter reading 20 mA (in ohms) is

  ---

• An electric bulb marked 40 W and 200 V, is used in a circuit of supply voltage 100 V. Now its power is

  ---

• ${10^{ - 3}}amp$ is flowing through a resistance of $1000\,\Omega $. To measure the correct potential difference, the voltmeter is to be used of which the resistance should be

  ---