The rate of heat developed in a resistor R connected to a supply of p.d. V is H. What will be the rate of heat developed if the p.d. is V/3 and the resistance doubled?

The rate of heat developed in a resistor R connected to a supply of potential V is H . What will be the rate of heat developed if the potential difference is V//3 and the resistance doubled ?

Heat is produced at a rate given by H in a resistor when it is connected across a supply of voltage V. If now the resistance of the resistor is doubled and the supply voltage is made V/3 then the rate of production of heat in the resistor will be

The rate of heat developed in a conductor is constant. The relation between current (i) and the resistance ( r) of the conductor is

A capacitor of 4 muF is charged to 400 V. Now the two plates are connected with a resistance of 2 KOmega . What will be the amount of heat through the resistance?

A battery of emf 10V and internal resistance 3 ohm is connected to a resistor. If the current in the circuit is 0.5A, what is the resistance of resistance of resistor ? What is the terminal voltage of the battery when the circuit is closed?

A cell of e.m.f E is connected to a resistance R_(1) for time t and the amount of heat generated in it is H. If the resistance R_(1) is replaced by another resistance R_(2) and is connected to the cell for the same time t, the amount of heat generated in R_(2) is 4H. Then the internal resistance of the cell is

A 24 v battery of internal resistance 4Omega is connected to a variable resistor. At what value of the current drawn from the battary is the rate of heat produced in the resistor maximum?

A light bulb is rated 100 W for 220 V ac supply of 50 Hz. Calculate the resistance of the bulb ,

When an exteranal resistance is connected to a battery of emf 80 V , an ammeter records 200 mA . If A voltmeter is connected to the two ends os the external resistance ,it records 60 V . Determine the rate of supply of energy by theresistance .