A resistance coil is made by joining in parllel two resistances each of `10 Omega`. An emf of 1.0V is applied between the two ends of the coil for 5 minutes. Calculate the heat produced in calories. (Given 1 cal. = 4.2 J)

A coil has a iductance of 0.7H and is joined in series with a resistance of 220 Omega . When an alternating emf of 220V at 50 cps is applied to it, then the wattless component of the current in the circuit is (take 0.7 = 2.2)

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

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

suppose the ends of the coil in the previous problem are connected to a resistane of 100 Omega . Neglecting the resistance of the coil, find the heat produced in the circuit in one minute.

suppose the ends of the coil in the previous problem are connected to a resistane of 100 Omega . Neglecting the resistance of the coil, find the heat produced in the circuit in one minute.

A cell of emf 1.4V and internal resistance 2 Omega is connected in series with a resistance of 100 Omega and an ammeter. The resistance of the ammeter is 4/3 Omega .To measure the potential difference between the two ends of the resistance a voltmeter is connected IF the reading of the ammter is 0.02 A.what is the resistance of the voltmeter?

A cell of emf 1.4V and internal resistance 2 Omega is connected in series with a resistance of 100 Omega and an ammeter. The resistance of the ammeter is 4/3 Omega .To measure the potential difference between the two ends of the resistance a voltmeter is connected IF the reading of the voltmeter is 1.10V, what will be its error?

A coil develops heat of 800 cal / sec . When 20 volts is applied across its ends. The resistance of the coil is (1 cal = 4.2 joule )