The potential difference across a resistor in a particular electric circuit is 420 V. The current through the resistor is 19.0 A. What is its resistance (in Ω)?

22.11 ohms

Explanation:

Potential difference(v)=420V

Current(I)=19.0 amp

Resistance(r)=?

r=v/I

r=420/19.0

r=22.11 ohms

half of a circle

explanation:

the arrow and the top of the circle is matching together. it is not a polygon because a polygon would always be the same shape. therefore, an half of a circle is called semicircle so you would find the radius of it.

laticia draws the diagram below to show earth’s magnetic field.

answer

the arrows to the right of earth should point up.