Current Electricity Two bulbs of 500 W and 200 W rated at 250 V will have resistance ratio as 4 : 25 5 : 2 2 : 5 25 : 4 4 : 25 5 : 2 2 : 5 25 : 4 ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The resistance of a parallel circuit consisting of two branches is 12 ohms. If the resistance of one branch is 18 ohms, what is the resistance of the other? 36 Q 18 Q 64 Q 48 Q 36 Q 18 Q 64 Q 48 Q ANSWER DOWNLOAD EXAMIANS APP
Current Electricity An instrument which detects electric current is known as Voltmeter Galvanometer Rheostat Wattmeter Voltmeter Galvanometer Rheostat Wattmeter ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Which of the following materials has the least resistivity ? Mercury Lead Zinc Copper Mercury Lead Zinc Copper ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The electrical energy required to heat a bucket of water to a certain temperature is 4 kWh. If the heat losses are 20 percent, the energy input is 6 kWh 2 kWh 3.2 kWh 5 kWh 6 kWh 2 kWh 3.2 kWh 5 kWh ANSWER DOWNLOAD EXAMIANS APP
Current Electricity When current flows through heater coil it glows but supply wiring does not glow because Supply wiring is covered with insulation layer Supply wires are made of superior material Current through supply line flows at slower speed Resistance of heater coil is more than the supply wires Supply wiring is covered with insulation layer Supply wires are made of superior material Current through supply line flows at slower speed Resistance of heater coil is more than the supply wires ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS