A student is given four resistors of resistance 4.0 Ω, 5.0 Ω, 2.5 Ω and 6.0 Ω respectively.
Draw the arrangement, using all four resistors, which will give the largest resistance and calculate the resistance of this arrangement.
Draw the arrangement, using all four resistors, which will give the smallest resistance and calculate the resistance of this arrangement.
The four resistors are now connected to a battery of emf 12 V and negligible internal resistance, as shown in Figure 1.
Figure 1
Calculate the total resistance in the circuit.
The circuit is now modified to the one shown in Figure 2.
Figure 2
Calculate the voltage across the 3.0 Ω resistor.
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