What is the total emf in the circuit if the potential drop across resistor 1 is 6V?
A house has 3 tube lights, two fans and a Television.
Each tube light draws 40W. The fan draws 80W and
the Television draws 60W. On the average, all the
tube lights are kept on for five hours, two fans for 12
hours and the television for five hours every day. Find
the cost of electric energy used in 30 days at the r ate
of Rs. 3.00 per Kwh. (AS7)
Multiple Choice Questions
A uniform wire of resistance 50 Ω is cut into five equal parts. These parts are now connected
in parallel. Then the equivalent resistance of the combination is [ ]
a) 2 Ω ; b) 12 Ω
c) 250 Ω d) 6250 Ω
A charge is moved from a point A to a point B. The work done to move unit charge during this
process is called. [ ]
a) potential at A b) potential at B
c) potential difference between A and B d) current from A to B
Joule/ coulomb is the same as [ ]
a) 1 watt b) 1 volt
c) 1 ampere d) 1 ohm
The resistors of values 2 Ω, 4 Ω, 6 Ω are connected in series. The equivalent resistance in the
circuit is [ ]
a) 2 Ω b) 4 Ω
c) 12 Ω d) 6 Ω
The resistors of values 3 Ω, 6 Ω, 18 Ω are connected in parallel. The equivalent resistance in
the circuit is [ ]
