A1.5m wire carries a 6 a current when a potential difference of 70 v is applied. what is the resistance of the wire?

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

(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?

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?