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Answers
1. In a given combination of resistors the equivalent resistance is that value of resistance, which when replaced in place of the combination, will continue to give the same performance for the part of circuit outside this combination.
2. Ammeter reading are the reading of the deflection of the magnetic needle due to the intensity of the magnetic field created in the ammeter coil caused by the amount of current flowing. So when calibrated they are capable of measuring the amount of current flowing when connected in series in the circuit
3. potential drop = 8v
5. The electromotive force (emf) is the potential difference of a source when no current is flowing. Terminal voltage is the voltage output of a device is measured across its terminals. Terminal voltage is calculated by V = emf - Ir.
6. potential drop = 144v
7. Practical laboratory voltmeters have maximum ranges of 1000 to 3000 volts (V). Most commercially manufactured voltmeters have several scales, increasing in powers of 10