Astudent is measuring the effect of an electric circuit on a compass and he is testing to see if increasing the current will cause the compass needle to change its direction faster he does one trral using a 9-volt battery and another trial using a 1.5 volt battery he takes accurate data based on good experimental design which would improve his experiment

Why do electron microscopes have higher resolving power than light microscopes?

Acombination reaction is when two or more combine to form one product. a decomposition reaction is when a substance breaks down into two or more simpler substances in a chemical reaction.

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?