Questions in Current Electricity

Select	Question
	Two resistors having equal resistances are joined in series and a current is passed through the combination. Neglect any variation in resistance as the temperature changes. In a given time interval
	A $5^\circ C$ rise in temperature is observed in a conductor by passing a current. When the current is doubled the rise in temperature will be approximately
	Watt-hour meter measures
	An electric lamp is marked 60 W, 230 V. The cost of 1 kilowatt hour of power is Rs. 1.25. The cost of using this lamp for 8 hours is
	4 bulbs marked 40 W, 250 V are connected in series with 250 V mains. The total power is
	Pick out the wrong statement
	Two resistors of $6\,\Omega $ and $9\Omega $ are connected in series to a 120 volt source. The power consumed by the $6\,\Omega $ resistor is
	Electric room radiator which operates at 225 volts has resistance of 50 ohms. Power of the radiator is approximately
	If a power of 100 W is being supplied across a potential difference of 200 V, current flowing is
	A current of 2 A passing through conductor produces 80 J of heat in 10 seconds. The resistance of the conductor is