Across
2.net flow of charges
4.discover current
5.discover voltage
9.does not direction
10.changes in direction
11.tends to reduce the flow of current
12.discover resistance
13.device used to measure voltage

Down
1.source provide potential difference
2.direction of motion from positive to negative terminal
3.unit of resistance
6.unit of current
7.device used to measure resistance
8.device used to measure current
13.unit of voltage

pa help naman po​