Electric field, power and voltage

What is an electric field?

• The electricity that surrounds us

• The same as the gravitational field

• A representation of how charges affect space

• The relation between electricity and magnetism

The electric field is represented by arrows. When you have a POSITIVE charge, the arrows are pointing to the charge, or away from it?

• To the charge

• Away from it

The electric field is represented by arrows. When you have a NEGATIVE charge, the arrows are pointing to the charge, or away from it?

• To the charge

• Away from it

If you have a charger working with a current of 35 A and 240 V, what will be your resulting Power? (Write the number and the unit, ex: 40 watts)

• 8,400 Watts

• 840 watts

• 7500 w

What is another term we can use to describe what Voltage is?

• Flow of charges

• Electrical pressure

• Electrical current

• Physical pressure

Electrical current is measured in:

• Amperes

• Volts

• Watts

• Joules

1 Watt is equivalent to:

• 1 J/C

• 1 C/s

• 1 C/s^2

• 1 J/s

Taking into account the formula we saw today, what would be the formula of Electrical current (I)?

• I= V*P

• I= P/V

• I= V/P

Taking into account the formula we saw today, what would be the formula of Voltage (V)?

• V= P*I

• V= P/I

• V= I/P

It is easier to understand the electricity flow when we compare it to ____ flow (the example in the video)

• air

• electrons

• water