Download Resistance Ohm*s Law Power

yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project

Document related concepts

Valve RF amplifier wikipedia , lookup

Power electronics wikipedia , lookup

Galvanometer wikipedia , lookup

Electric battery wikipedia , lookup

Power MOSFET wikipedia , lookup

Multimeter wikipedia , lookup

Switched-mode power supply wikipedia , lookup

TRIAC wikipedia , lookup

Battery charger wikipedia , lookup

Electrical ballast wikipedia , lookup

Surge protector wikipedia , lookup

Resistive opto-isolator wikipedia , lookup

Rechargeable battery wikipedia , lookup

Current source wikipedia , lookup

Current mirror wikipedia , lookup

Opto-isolator wikipedia , lookup

Rectiverter wikipedia , lookup

Ohm's law wikipedia , lookup

Ohm’s Law
The current from the 3.0 V battery of a pocket calculator is 0.17 mA. In one
hour of operation, (a) how much charge flows in the circuit and (b) how much
energy does the battery deliver to the calculator circuit?
Ohm’s Law
Resistance of a Wire
Ohm’s Law
The filament in a light bulb is a resistor in the form of a thin piece of wire. The
wire becomes hot enough to emit light because of the current in it. A
flashlight uses two 1.5 V (effectively a single 3.0 V battery) to provide a
current of 0.40 A in the filament. Determine the resistance of the glowing
The heating element of a 110 V, 1500 W heater is 5.4 m long. If it is made of
iron, what must its diameter be?
In a flashlight, the current is 0.40 A, and the voltage is 3.0 V. Fnd (a) the power
delivered to the bulb and (b) the energy dissipated in the bulb in 5.5 minutes
of operation.