Question

1. A television (65 W), a refrigerator (1.0 kW), an electric iron (1.0 KW) and 10 lamps (30 W each) are connected in
series in a house. Calculate how much it would cost the housekeeper to switch on all the appliances for one day if
the cost of electricity is N21.00 per kWh.
2. A metal rod is 2 m long and 8 mm in diameter. Compute its resistance if the resistivity of the metal is
1.76 x 10-8Ωm.
3. A 2.0 volt cell delivers a current of 300 mA, generating 2100 J of energy in the process.
For how long did the cell operate? Show your workings.

Answer 1

yes do it yourself......