The internal resistance r of a voltage source affects the output voltage when a current flows. The voltage output of a device is called its terminal voltage V and is given by V = emf − Ir, where I is the electric current and is positive when flowing away from the positive terminal of the voltage source.

## What is the terminal voltage of the 6.0 V battery?

(b) The terminal voltage of the 6.0-V battery is ∆V = ε − I3 r = (6.0 V) − (0.0546 A)(1.0 Ω) = 5.9 V.

## When a battery is short circuited the terminal voltage is?

When a battery is short-circuited, the terminal voltage is zero.

## What happens when a battery is short circuited?

A short circuit is an abnormal connection between two nodes of an electric circuit intended to be at different voltages. This results in an electric current limited only by the Thévenin equivalent resistance of the rest of the network which can cause circuit damage, overheating, fire or explosion.

## When a battery is part of a complete circuit the voltage across its terminals is?

Does this mean the battery will necessarily measure 12 V across its terminals when it is placed in a complete circuit? No, when a current is flowing through the battery, the terminal voltage will be less than 12 V due to the voltage drop across the batteries internal resistance.

## What are three sources of EMF?

Overview. Devices that can provide emf include electrochemical cells, thermoelectric devices, solar cells, photodiodes, electrical generators, transformers and even Van de Graaff generators.

## How much EMF is safe?

No known health effects are expected if your exposure to EMF falls below the levels in the following guidelines: natural electromagnetic fields (like those created by the sun): 200 V/m. power mains (not close to power lines): 100 V/m. power mains (close to power lines): 10,000 V/m.

## Is it bad to live near a power station?

Studies have been done on people that live within 300 meters of a substation. There is some evidence to suggest an increased risk of some type of cancer. Researchers who believe that humans can suffer from cancer and tumors when exposed to EMF radiation get their data from studies of people living near power stations.

## How do you reduce EMF?

Top 5 things to do to reduce your EMF exposures at your workstation/office

1. Move your router or wifi booster at least 20 feet from your desk or anyone’s desk.
2. Use a wired phone rather than a cordless phone.
3. Disable Bluetooth and wireless on your phone only use when needed.
4. If you use a space heater, use a ceramic one.