UCE PHYSICS 2008 PAPER 1 QTN 49

State ohm’s law

(b)

Two resistors of resistances 3Ω and 6Ω are connected across a battery of 4v of negligible internal resistance as shown in figure 14 above. Find the

(i) Combined resistance

(ii) Current supplied by the battery

  1. (a) what happens to an insulator when it is rubbed by another insulator of different material?

(b)

Figure 7 shows a uniform rod of length 4.0 m improved from one end. If the weight of the rod is 120N, find the force F which keeps the rod horizontal.

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