Physics, 22.07.2020 14:01 bks53

Photograph 7.18 Uses of magnets and electromagnets in daily life direction of the poles.
sup
Formative Practice
7.3
P
Dry cell
elechi Copper
wire
1. What is a magnetic field?
Iron
2. Figure 1 shows an iron nail coiled with insulated copper wire nail
connected to a dry cell of 1.5 V.
(a) What happens when the switch is turned on the
(b) Mark the direction of the current flow in the copper wire
around the iron nail.
antidekure NS
(c) State the poles of the magnetic field at P and Q.
(d) What happens to the strength of the magnetic field if another
dry cell of 1.5 V is added?

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Photograph 7.18 Uses of magnets and electromagnets in daily life direction of the poles.
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