$(a)$ Draw magnetic field lines of a bar magnet. "Two magnetic field lines never intersect each other". Why?
$(b)$ An electric oven of $1.5 \, kW$ is operated in a domestic circuit $(220 \, V)$ that has a current rating of $5 \, A$. What result do you expect in this case? Explain.

(N/A) Magnetic field lines around a bar magnet originate from the North pole and enter the South pole outside the magnet, forming closed loops.
If two magnetic field lines were to intersect at a point, it would imply that there are two directions of the magnetic field at that single point, which is physically impossible.
$(b)$ Given: Power $(P) = 1.5 \, kW = 1500 \, W$, Voltage $(V) = 220 \, V$, Current rating $= 5 \, A$.
Using the formula $P = V \times I$, the current $(I)$ drawn by the oven is:
$I = \frac{P}{V} = \frac{1500 \, W}{220 \, V} \approx 6.82 \, A$.
Since the current drawn $(6.82 \, A)$ is significantly higher than the current rating of the circuit $(5 \, A)$, the circuit will experience an overload. This will likely cause the fuse to blow or the circuit breaker to trip, cutting off the power supply to prevent damage to the wiring.