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- If 64 C flow along a wire in 4.0 s, what is the average current in the wire?The current density present in a conductor is 570A/m2. What is the current flowing the conductor if the radius of cross-sectional area is 0.34 ft?A circuit is connected to a potential difference, V = 23.6 volts, at a power P = 9.3 watts. What is the current,I, flowing in the circuit?
- A piece of resistance wire, 15.6 m long and of cross-sectional area 12 mm², passes a current of 7.9 A when connected to de supply at 240 V. Calculate the resistivity of the wire?For each resistor, calculare the current going through it.A circuit design calls for a 1.5-kΩ resistor to have 4.7 V across its terminals. What would he the expected current? The circuit is built and the resistance is measured at 1500 Ω and the voltage at 4.7 V. What is the current through the resistor?
- A voltage 7 V is applied to a device of resistance R; and the current through the device is i. If thedevice obeys Ohm’s law, what will be the outcome if the voltage is increased to 14 V?A battery supplies a water heater with a potential difference of 110v. If it’s resistance is 10 ohms, how much power does it use?An electric heater works by passing a current of 110 A thought a coiled metal wire, making it red hot.If the resistance of the wire is 1.1 OHMS, what voltage must be applied to it?