How are a voltmeter and an ammeter connected in a circuit? Explain.

(N/A) In a circuit, an ammeter is connected in $series$ with the load to measure the current flowing through it. This is because an ammeter has a very low resistance, and connecting it in series ensures that the entire current passes through it without significantly altering the circuit's characteristics.
Conversely, a voltmeter is connected in $\parallel$ across the component whose potential difference is to be measured. This is because a voltmeter has a very high resistance, and connecting it in parallel ensures that only a negligible amount of current is diverted through it, allowing it to measure the potential difference accurately without affecting the circuit's operation.