Look at the diagram below. Calculate the present resistance of the variable resistor if the ammeter is reading 0.8A.ohms

If the ammeter in the given circuit shown in the diagram reads 2A, the resistanceR is

The student chooses a fixed resistor with a resistance of 5 kΩ. The reading on the ammeter is 0.8 mA. (i) State the equation linking voltage, current and resistance.

A 6.5-ohm resistor, an unknown resistor, R, and two ammeters, A1 and A2, are connected as shown below with a 18-volt source. Ammeter A2 reads a current of 10.0 amperes.a. Calculate the current measured by ammeter A1 in the diagram shown.b. Calculate the resistance of the unknown resistor, R in the diagram shown. c. Determine the equivalent resistance of the circuit shown.

Deduce the readings on the ammetersRemember: Current is conserved at a junction: current in = current out0.80A enter the junction, and 0.30A go through resistor P

Component X and a cell of negligible internal resistance are placed in a circuit.A variable resistor R is connected in series with component X. The ammeter reads 20 mA.4.0 VARX(i) Determine the resistance of the variable resistor.