A. 2 watts
B. 4 watts
C. 6 watts
D. 12 watts
Which of the following are the passive elements?
A. Resistor
B. Bulb
C. Both
D. None of these.
When the element is not capable of delivering energy independently, are called as passive element. Both resistor and bulb are the passive elements and they can’t increase the energy level of a circuit
Internal resistance of ideal current source is ?
A. zero
B. infinite
C. finite
B. 100 ohms
Ideal current source delivers energy at specified current, which is independent on voltage across the load. The internal resistance must become very high to deliver maximum current.
The number of electrons in the outer most orbit of carbon atom is___________?
A. 3
B. 4
C. 6
D. 7
Which quantity consists of a unit 1KWh ?
A. Energy
B. Time
C. Power
D. Charge
1 kWh is the amount of energy used by a 1 kW (1000 watt) resistance for 1 hour. Energy = Power × Time.
Internal resistance of ideal voltage source is ?
A. zero
B. infinite
C. finite
D. 100 ohms
Internal resistance of ideal voltage source is
When current flows through heater coil it glows but supply wiring does not glow because______________?
A. current through supply line flows at slower speed
B. supply wiring is covered with insulation layer
C. resistance of heater coil is more than the supply wires
D. supply wires are made of superior material