A circuit consists of two resistors, with resistances of 20 kn and 10 kn, in series. A voltage of 100 V is applied to the circuit. What reading will be indicated by a voltmeter of resistance of 50 kn...

A circuit consists of two resistors, with resistances of 20 kn and 10 kn, in series. A voltage of 100 V is applied to the circuit. What reading will be indicated by a voltmeter of resistance of 50 kn connected across the 10 kR resistor?

If aluminium has a resistivity of 2.5 X 10-a R m, what will be the resistance of an aluminium wire with a length of 1 m and a crosssectional area of 2 mm2 and what is the conductivity of the aluminium?