Last visit was: 22 Dec 2024, 14:29 It is currently 22 Dec 2024, 14:29

Close

GRE Prep Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GRE score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel
avatar
Senior Manager
Senior Manager
Joined: 20 May 2014
Posts: 285
Own Kudos [?]: 722 [7]
Given Kudos: 225
Retired Moderator
Joined: 07 Jan 2018
Posts: 739
Own Kudos [?]: 1462 [0]
Given Kudos: 93
Send PM
avatar
Intern
Intern
Joined: 18 May 2016
Posts: 35
Own Kudos [?]: 35 [0]
Given Kudos: 0
Send PM
Verbal Expert
Joined: 18 Apr 2015
Posts: 30472
Own Kudos [?]: 36818 [0]
Given Kudos: 26100
Send PM
The microcurrent through the electrode in a delicate circuit [#permalink]
Expert Reply
The microcurrent through the electrode in a delicate circuit is usually held constant at \(3.6 * 10^{-8}\) amps. Because of a defect in another part of the circuit, the current was 1,000 times smaller. What was the current, in amps, caused by this defect?

A. \(3.6*10^{-8000}\)

B. \(3.6*10^{-24}\)

C. \(3.6*10^{-11}\)

D. \(3.6*10^{-5}\)

E. \(3.6*10^{\frac{-8}{3}}\)
avatar
Manager
Manager
Joined: 07 Aug 2016
Posts: 59
Own Kudos [?]: 68 [0]
Given Kudos: 0
GRE 1: Q166 V156
Send PM
Re: The microcurrent through the electrode in a delicate circuit [#permalink]
Carcass wrote:
The microcurrent through the electrode in a delicate circuit is usually held constant at \(3.6 * 10^{-8}\) amps. Because of a defect in another part of the circuit, the current was 1,000 times smaller. What was the current, in amps, caused by this defect?

A. \(3.6*10^{-8000}\)

B. \(3.6*10^{-24}\)

C. \(3.6*10^{-11}\)

D. \(3.6*10^{-5}\)

E. \(3.6*10^{\frac{-8}{3}}\)


1,000 times smaller means we divide it by 1,000 which is basically 10^3

So (3.6 * 10^-8)/(10^3) = 3.6 * 10^(-8 -3) = 3.6 * 10^-11

Answer choice C
avatar
Manager
Manager
Joined: 23 Oct 2018
Posts: 57
Own Kudos [?]: 0 [0]
Given Kudos: 0
Send PM
Re: The microcurrent through the electrode in a delicate circuit [#permalink]
thanks
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Own Kudos [?]: 12234 [0]
Given Kudos: 136
Send PM
Re: The microcurrent through the electrode in a delicate circuit [#permalink]
1
Bunuel wrote:
The microcurrent through the electrode in a delicate circuit is usually held constant at \(3.6*10^{(-8)}\) amps. Because of a defect in another part of the circuit, the current was 1,000 times smaller. What was the current, in amps, caused by this defect?


A. \(3.6 * 10^{(-8000)}\)

B. \(3.6 * 10^{(-24)}\)

C. \(3.6 * 10^{(-11)}\)

D. \(3.6 * 10^{(-5)}\)

E. \(3.6 * 10^{(-\frac{8}{3})}\)


Key concept #1: If X is 1000 times smaller than Y, we can write: X = Y/1000

Key concept #2: \(\frac{ab}{c}=(a)(\frac{b}{c})\)


So, the measure of the resulting current = \(\frac{3.6*10^{(-8)}}{1000}\)

Rewrite as: \(\frac{3.6*10^{(-8)}}{10^3}\)

Use Concept #2 to rewrite as: \((3.6)\frac{10^{(-8)}}{10^3}\)

Apply Quotient Law for exponents to get: \((3.6)(10^{(-8-3)})\)

Simplify: \((3.6)(10^{(-11)})\)

Answer: C

Cheers,
Brent
Intern
Intern
Joined: 08 Jun 2024
Posts: 21
Own Kudos [?]: 13 [1]
Given Kudos: 16
Send PM
Re: The microcurrent through the electrode in a delicate circuit [#permalink]
1
Given Current as constant as 3.6 * 10 ^-8 , if the current is 1000 amp less then we have a value which is 1000 times smaller than this

so dividing 3.6 * 10 ^-8 we get 3.6 *10^-11
Prep Club for GRE Bot
Re: The microcurrent through the electrode in a delicate circuit [#permalink]
Moderators:
GRE Instructor
88 posts
GRE Forum Moderator
37 posts
Moderator
1115 posts
GRE Instructor
234 posts

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne