In the circuit shown, the reading of the ammeter is doubled after the switch is closed. Each resistor has a resistance equal to 1 Ω and the ideal cell has an emf equal to 10 V. Then the ammeter has a resistance equal to
In the circuit shown, the reading of the ammeter is doubled after the switch is closed. Each resistor has a resistance equal to and the ideal cell has an emf equal to 10 V. Then the ammeter has a resistance equal to