Current Electricity When current flows through heater coil it glows but supply wiring does not glow because 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 Supply wiring is covered with insulation layer ANSWER DOWNLOAD EXAMIANS APP
Current Electricity With rise in temperature the resistance of pure metals Decreases Increases Remains constant First increases and then decreases Decreases Increases Remains constant First increases and then decreases ANSWER DOWNLOAD EXAMIANS APP
Current Electricity All good conductors have high Conductance Reluctance Thermal conductivity Resistance Conductance Reluctance Thermal conductivity Resistance ANSWER DOWNLOAD EXAMIANS APP
Current Electricity An electric filament bulb can be worked from Battery supply only DC supply only All of the listed here AC supply only Battery supply only DC supply only All of the listed here AC supply only ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Current velocity through a copper conductor is independent of current strength nearly 3 x 108 m/s the same as propagation velocity of electric energy of the order of a few ^.s/m independent of current strength nearly 3 x 108 m/s the same as propagation velocity of electric energy of the order of a few ^.s/m ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Resistance of a material always decreases if 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 Temperature of material is decreased ANSWER DOWNLOAD EXAMIANS APP
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