Current Electricity When current flows through heater coil it glows but supply wiring does not glow because Resistance of heater coil is more than the supply wires Current through supply line flows at slower speed Supply wiring is covered with insulation layer Supply wires are made of superior material Resistance of heater coil is more than the supply wires Current through supply line flows at slower speed Supply wiring is covered with insulation layer Supply wires are made of superior material ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Three 60 W bulbs are in parallel across the 60 V power line. If one bulb burns open The other two bulbs will light All three bulbs will light Rest of the two bulbs will not light There will be heavy current in the main line The other two bulbs will light All three bulbs will light Rest of the two bulbs will not light There will be heavy current in the main line 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? 48 Q 64 Q 36 Q 18 Q 48 Q 64 Q 36 Q 18 Q ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The resistance of a straight conductor is independent of Shape of cross-section Temperature Cross-sectional area Material Shape of cross-section Temperature Cross-sectional area Material ANSWER DOWNLOAD EXAMIANS APP
Current Electricity If the efficiency of a machine is to be high, what should be low? Losses Input power True component of power kWh consumed Losses Input power True component of power kWh consumed ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Resistance of a material always decreases if Temperature of material is decreased Number of free electrons available becomes more None of these Temperature of material is increased Temperature of material is decreased Number of free electrons available becomes more None of these Temperature of material is increased ANSWER DOWNLOAD EXAMIANS APP
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