A student is testing a circuit to determine if it is in series of parallel. Which of the following tests correctly identifies the type of circuit? * 20 points
If the bubls are equal brightness, it is a series circuit because each bulb will have to share the same current.
If all the bulbs are equal brightness, it is a parallel circuit because each bulb in a parallel circuit has its own path to the battery.
If one bulb is unscrewed and the others stay lit, it is a series circuit because each bulb in a series circuit has its own path to the battery.
If one bulb is unscrewed and the others stay lit, it is a parallel circuit because each bulb in a series circuit has its own path to the battery.

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min

the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.